Turbo cleaning
Super Moderator
Joined: Jul 2006
Posts: 7,555
Welcome to the site.
What’s the miles on your truck, turbo virgin, or any prior cleaning?
If your getting boost codes (?) or preventative cleaning?) usually it’s an issue within the unison ring sticking/hanging and the regulator can’t adust movement/positions. Or are you talking the compressor side?
If exhaust side, If you could/can get cleaner into the exhaust in/out,, carbon buildup although certainly a contributing factor for the cause, but rust on the surface edges of the unison ring and corrosion build up on the ID and OD on the turbo housing tightening up clearances and bind the slip areas for the unison rotations is generally the culprit.
Spray cleaners would be hard for access, or to direct, possibly have some affect or temporary, but getting any cocktail into the areas needing attention, difficult.
Effectiveness on rusted, pinched corrosion areas, would be minimal I’d think.
May be worth a try with a cleaner capable of rust busting, carbon etc, but a disassembled cleaning would make for more lasting results, and also an inspection may yeild other internal issue/wear.
What’s the miles on your truck, turbo virgin, or any prior cleaning?
If your getting boost codes (?) or preventative cleaning?) usually it’s an issue within the unison ring sticking/hanging and the regulator can’t adust movement/positions. Or are you talking the compressor side?
If exhaust side, If you could/can get cleaner into the exhaust in/out,, carbon buildup although certainly a contributing factor for the cause, but rust on the surface edges of the unison ring and corrosion build up on the ID and OD on the turbo housing tightening up clearances and bind the slip areas for the unison rotations is generally the culprit.
Spray cleaners would be hard for access, or to direct, possibly have some affect or temporary, but getting any cocktail into the areas needing attention, difficult.
Effectiveness on rusted, pinched corrosion areas, would be minimal I’d think.
May be worth a try with a cleaner capable of rust busting, carbon etc, but a disassembled cleaning would make for more lasting results, and also an inspection may yeild other internal issue/wear.
Last edited by Hayapower; Mar 27, 2018 at 12:14 PM.
Super Moderator
Joined: Jul 2006
Posts: 7,555
Remember what the code was?
Since you don’t have any drivability complaints, no low boost indications, WOT boost PSI on the gauge is spec (?)
A unison issue may present itself as,, when the CEL is cleared (and after some driving so it’ll self test again) does it set another CEL (or follow this pattern if repeated) after a cold start up with a lite throttle then applied during a normal launch or moderate pull away then light then sets? or similarly and on another retest, after a cooling soak and the light then trips pulling from a stop?
The pattern is,, the ring hangs, off position, or possibly delays on the commanded movements after cooling on the startup and otherwise may operate within spec, or close enough not to set related codes, and the drivability is still good.
Low mileage for an 06,, and may be the reason for the low boost if not worked regularly, meaning the unison can hang because of condensation-rust. It’s the ‘response time value’ that usually sets the code for binding internals, but depending on which code you retrieved, with/without any real obvious drivability issues.
Just did an 05 same symptoms,, ran just fine but kept setting the CEL. The unison ring was pinched tight cold or near ambient,, heated it would move more freely and boost PSI was spec, but the reaction times or stalled movements would generate the low code..
Certainly other component issues could cause a low code with little to no driver seat of the pants feel.
If you remember, or the code is still logged, would be a better help in a direction..
Since you don’t have any drivability complaints, no low boost indications, WOT boost PSI on the gauge is spec (?)
A unison issue may present itself as,, when the CEL is cleared (and after some driving so it’ll self test again) does it set another CEL (or follow this pattern if repeated) after a cold start up with a lite throttle then applied during a normal launch or moderate pull away then light then sets? or similarly and on another retest, after a cooling soak and the light then trips pulling from a stop?
The pattern is,, the ring hangs, off position, or possibly delays on the commanded movements after cooling on the startup and otherwise may operate within spec, or close enough not to set related codes, and the drivability is still good.
Low mileage for an 06,, and may be the reason for the low boost if not worked regularly, meaning the unison can hang because of condensation-rust. It’s the ‘response time value’ that usually sets the code for binding internals, but depending on which code you retrieved, with/without any real obvious drivability issues.
Just did an 05 same symptoms,, ran just fine but kept setting the CEL. The unison ring was pinched tight cold or near ambient,, heated it would move more freely and boost PSI was spec, but the reaction times or stalled movements would generate the low code..
Certainly other component issues could cause a low code with little to no driver seat of the pants feel.
If you remember, or the code is still logged, would be a better help in a direction..
Last edited by Hayapower; Mar 27, 2018 at 02:02 PM.
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